package com.sundy.boot.shrio;

import org.apache.shiro.mgt.DefaultSessionStorageEvaluator;
import org.apache.shiro.mgt.DefaultSubjectDAO;
import org.apache.shiro.spring.LifecycleBeanPostProcessor;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;

import javax.servlet.Filter;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    @Bean("securityManager")
    public DefaultWebSecurityManager getManager(MyRealm realm) {

        DefaultWebSecurityManager manager = new DefaultWebSecurityManager();

        //自己的realm
        manager.setRealm(realm);

        /*
         * 关闭shiro自带的session
         */
        DefaultSubjectDAO subjectDAO = new DefaultSubjectDAO();

        DefaultSessionStorageEvaluator defaultSessionStorageEvaluator = new DefaultSessionStorageEvaluator();

        defaultSessionStorageEvaluator.setSessionStorageEnabled(false);

        subjectDAO.setSessionStorageEvaluator(defaultSessionStorageEvaluator);

        manager.setSubjectDAO(subjectDAO);

        return manager;
    }

    @Bean("shiroFilter")
    public ShiroFilterFactoryBean factory(DefaultWebSecurityManager securityManager) {

        ShiroFilterFactoryBean factoryBean = new ShiroFilterFactoryBean();

        //添加自己的过滤器并且取名为jwt
        Map<String, Filter> filterMap = new HashMap<>();

        filterMap.put("jwt", new JWTFilter());

        factoryBean.setFilters(filterMap);

        factoryBean.setSecurityManager(securityManager);

        factoryBean.setUnauthorizedUrl("/401");

        Map<String, String> filterRuleMap = new HashMap<>();

        //所有请求通过JWT Filter
        filterRuleMap.put("/secure/**", "jwt");

        factoryBean.setFilterChainDefinitionMap(filterRuleMap);

        return factoryBean;
    }

    /**
     * 下面的代码是添加注解支持
     */
    @Bean
    @DependsOn("lifecycleBeanPostProcessor")
    public DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator() {

        DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();

        //强制使用cglib，防止重复代理和可能引起代理出错的问题
        defaultAdvisorAutoProxyCreator.setProxyTargetClass(true);

        return defaultAdvisorAutoProxyCreator;
    }

    @Bean
    public LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
        return new LifecycleBeanPostProcessor();
    }

    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(DefaultWebSecurityManager securityManager) {

        AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();

        advisor.setSecurityManager(securityManager);

        return advisor;
    }
}
